#include <iostream>
using namespace std;

namespace CC {
	int g_no;
	struct Person {
		int m_age;
		void run() {
			cout << "Preson run() " << m_age <<  endl;
		}
	};
}

using namespace CC;
int main() {
	Person person;
	person.m_age = 18;
	person.run();

	return 0;
}